Types of liquid solution are ………..
a) two
b) four
c) three
d) nine
Example of solid in liquid solution is ………
a) sea water
b) smoke
c) amalgam
d) brass
Brass (alloy) is an example of ……solution.
a) solid in liquid
b) liquid in gas
c) liquid in liquid
d) solid in solid
Brass is an alloy of ……….. and zinc.
a) copper
b) aluminium
c) silver
d) gold
Explanation:Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical, electrical, and chemical properties. It is a substitutional alloy: atoms of the two constituents may replace each other within the same crystal structure.
Sterling silver contains the percentage of silver.
a) 87.9%
b) 7.5%
c) 65.89%
d) 92.5%
Percentage of copper in sterling silver is ……
a) 67.9%
b) 7.5%
c) 45.7%
d) 92.5%
